The modulation order of a digital communication scheme is determined by the number of the different symbols that can be transmitted using it.
Modulation order can only be defined for digital modulations. The simplest forms of digital modulation are of second order because they can transmit only two symbols (usually denoted as "0" and "1" or as "-1" and "1"). They are called binary shift keying (BSK).
Modulations which have an order of 4 and above usually are termed as higher-order modulations. Examples of these are quadrature phase shift keying (QPSK) and its generalisation as m-ary quadrature amplitude modulation (m-QAM).
Because existing computers and automation systems are based on binary logic most of the modulations have an order which is a power of two: 2, 4, 8, 16, etc. In principle, however, the order of a modulation can be any integer greater than one.
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modulation, order, this, article, does, cite, sources, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, december, 2009, learn, when, re. This article does not cite any sources Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Modulation order news newspapers books scholar JSTOR December 2009 Learn how and when to remove this template message The modulation order of a digital communication scheme is determined by the number of the different symbols that can be transmitted using it Modulation order can only be defined for digital modulations The simplest forms of digital modulation are of second order because they can transmit only two symbols usually denoted as 0 and 1 or as 1 and 1 They are called binary shift keying BSK Modulations which have an order of 4 and above usually are termed as higher order modulations Examples of these are quadrature phase shift keying QPSK and its generalisation as m ary quadrature amplitude modulation m QAM Because existing computers and automation systems are based on binary logic most of the modulations have an order which is a power of two 2 4 8 16 etc In principle however the order of a modulation can be any integer greater than one This technology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Modulation order amp oldid 1163507401, wikipedia, wiki, book, books, library,
